From 45c4f2a0b6c6302c5617534b8189c0e9b5a4a048 Mon Sep 17 00:00:00 2001
From: Uwe Kleine-Koenig <ukleinek@strlen.de>
Date: Wed, 4 Feb 2009 17:02:30 +0800
Subject: [PATCH] Blackfin arch: explicit add a might sleep to gpio_free
According to the documentation gpio_free should only be called from task
context only. To make this more explicit add a might sleep to all
implementations.
This patch changes the gpio_free implementations for the blackfin
architecture.
Signed-off-by: Uwe Kleine-Koenig <ukleinek@strlen.de>
Cc: David Brownell <david-b@pacbell.net>
Acked-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
arch/blackfin/kernel/bfin_gpio.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c
index 0c4fc31029c22..05bf85ba74431 100644
--- a/arch/blackfin/kernel/bfin_gpio.c
+++ b/arch/blackfin/kernel/bfin_gpio.c
@@ -1081,6 +1081,8 @@ void bfin_gpio_free(unsigned gpio)
if (check_gpio(gpio) < 0)
return;
+ might_sleep();
+
local_irq_save_hw(flags);
if (unlikely(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio)))) {
--
GitLab